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iVinArrow [24]
3 years ago
8

The high school asked Amanda to paint a few murals around the school. Her mural in the cafeteria will show a ray of sunlight bre

aking through storm clouds. To create the perfect gray paint for storm clouds, Amanda models the proportional relationship between the number of cans of black paint, x, and the number of cans of white paint, y, with the equation y = 2x. If Amanda used 5 cans of white paint, how many cans of black paint did she use? A) 1 1 2 B) 2 C) 2 1 2 D) 5
Mathematics
2 answers:
natita [175]3 years ago
7 0

Answer:

A

Step-by-step explanation:

aliya0001 [1]3 years ago
5 0

She used 2\frac{1}{2} cans of black paint.

Step-by-step explanation:

Given,

Number of cans of black paint = x

Number of cans of white paint = y

Given equation;

y=2x    Eqn 1

Amanda used 5 cans of white paint, therefore,

y=5

Putting in Eqn 1

5=2x\\2x=5

Dividing both sides by 2

\frac{2x}{2}=\frac{5}{2}

Writing in fraction form;

x=2\frac{1}{2}

She used 2\frac{1}{2} cans of black paint.

Keywords: fraction, division

Learn more about fractions at:

  • brainly.com/question/10435816
  • brainly.com/question/10435836

#LearnwithBrainly

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What is the product of 2x - 5 and 3x2 + 5x - 7? Write your answer in standard form.
Orlov [11]

Answer:

(2x - 5 ) (3x^2 + 5x - 7) = 6x^3 - 5x^2 - 39x - 35

The product of 2x – 5 and 3x2 + 5x - 7equal to the product of 5x - 2 and 3x2 + 5x - 7 are not equal.

Step-by-step explanation:

Product means multiplication

Product of 2x - 5 and 3x^2 + 5x - 7

(2x - 5 ) (3x^2 + 5x - 7)

= 6x^3 + 10x^2 - 14x - 15x^2 - 25x - 35

Collect like terms

= 6x^3 + 10x^2 - 15x^2 - 14x - 25x - 35

= 6x^3 - 5x^2 - 39x - 35

Product of 5x - 2 and 3x^2 + 5x - 7

(5x - 2) (3x^2 + 5x - 7)

= 15x^3 + 25x^2 - 35x - 6x^2 - 10x + 14

Collect like terms

= 15x^3 + 25x^2 - 6x^2 - 35x - 10x + 14

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They both consist of different variables in their multiplier

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3 years ago
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